POPFLEX to Spanx leggings size
The short answer
POPFLEX XXS is Spanx XS by the two brands' own charts. 4 of 9 POPFLEX sizes land on a different label at Spanx.
Both brands publish the body waist each size is cut for, so every row matches a waist, not a tag.
| POPFLEX | POPFLEX builds it for | Spanx, by chart | Same label | Spanx builds it for | Spanx also prints |
|---|---|---|---|---|---|
| XXS | waist 22 to 24 in, hip 32 to 34 in | XS | not published | waist 25 to 27 in, hip 34 to 36 in | US numeric 0-2 |
| XS | waist 24 to 26 in, hip 34 to 36 in | XS | XS | waist 25 to 27 in, hip 34 to 36 in | US numeric 0-2 |
| S | waist 26 to 28 in, hip 36 to 38 in | XS | S | waist 25 to 27 in, hip 34 to 36 in | US numeric 0-2 |
| M | waist 28 to 31 in, hip 38 to 40 in | M | M | waist 29 to 31 in, hip 38 to 40 in | US numeric 8-10 |
| L | waist 31 to 34 in, hip 40 to 43 in | L | L | waist 31 to 33.5 in, hip 40 to 42.5 in | US numeric 12-14 |
| XL | waist 34 to 38 in, hip 43 to 47 in | XL | XL | waist 33.5 to 36 in, hip 42.5 to 45 in | US numeric 16 |
| 1X | waist 38 to 42 in, hip 48 to 52 in | 2X | 1X | waist 39 to 42 in, hip 48 to 51 in | US numeric 22-24 |
| 2X | waist 42 to 46 in, hip 52 to 56 in | 3X | 2X | waist 42 to 45 in, hip 51 to 54 in | US numeric 26 |
| 3X | waist 46 to 50 in, hip 56 to 60 in | 3X | 3X | waist 42 to 45 in, hip 51 to 54 in | US numeric 26 |
What wearers say
Charts describe a garment. People who own both brands describe a fit, and their answer ranks above this table once five of them stand behind it. Pick your size in the converter to see whether there are enough yet.
Sources
- POPFLEX size guide, read on 2026-09-18.
- Spanx size guide, read on 2026-09-18. Spanx on TrueToSize